Since opening the existing culvert to tidal flow, salinities in the lagoon have climbed to around 20 ppt (winter) and 30 ppt (summer). Dissolved oxygen concentrations also have improved and although there are still periods of low or no bottom water oxygen that may adversely impact benthic communities, there have been no more fish kills like those witnessed before the restoration. Temperatures are fairly warm, with maximum values reaching ~30C (86F) in the summer.
Perhaps the most conspicuous change in the water quality of East Harbor has been the increase in water clarity (large image). What was once a very turbid lake with almost no visibility has turned into a very clear, well-lit estuary. Finally, the sandy bottom can be seen through clear water across the entire lagoon.